dparse2

0.7.0 verified Fri May 01 auth: no python

A robust fork of the original dparse library with up-to-date dependency file parsing (pip requirements, Pipfile, conda env yml, poetry, setup.cfg). Version 0.7.0 supports Python 3.6+. Maintained by nexB.

pip install dparse2

Common errors

error ModuleNotFoundError: No module named 'dparse' ↓

cause Package renamed to dparse2; old import fails.

fix

Run 'pip install dparse2' and change imports to 'import dparse2'.

error AttributeError: module 'dparse2' has no attribute 'parse' ↓

cause Wrong import path; parse is a function, not a module attribute when using 'import dparse2'.

fix

Use 'from dparse2 import parse' or 'dparse2.parse(...)'.

error TypeError: parse() missing 1 required positional argument: 'file_type' ↓

cause parse() requires a file type class as second argument.

fix

Provide a file type, e.g., 'from dparse2.filetypes import RequirementsFile' and call 'parse(content, RequirementsFile)'.

Warnings

breaking Package renamed from dparse to dparse2. All imports must use dparse2. ↓

fix Replace 'import dparse' with 'import dparse2'.

breaking Python 2.7 support dropped after 0.5.0.1. Versions 0.6+ require Python 3.6+. ↓

fix Upgrade to Python 3.6+ or use dparse2==0.5.0.1.

gotcha parse() returns a ParsedFile object; dependencies can be empty if file is malformed. Always check dependencies before iteration. ↓

fix Use 'if parsed.dependencies: for dep in parsed.dependencies: ...'

gotcha RequirementsFile parser expects base directory (default: '.'). Relative paths in requirements.txt are resolved against the base dir. ↓

fix Pass base_dir parameter to parse() to control relative path resolution.

Imports

parse
```
from dparse2 import parse
```
Original dparse used 'from dparse import parse'. The module is now dparse2.

filetypes

wrong

from dparse import filetypes

correct

from dparse2.filetypes import RequirementsFile

Package name changed from dparse to dparse2.

dparse2
```
import dparse2
```
Top-level package is dparse2, not dparse.

Quickstart

Parses a requirements.txt file and prints each dependency name and version specifier.

from dparse2 import parse
from dparse2.filetypes import RequirementsFile

with open('requirements.txt') as f:
    content = f.read()
parsed = parse(content, RequirementsFile)
for dep in parsed.dependencies:
    print(dep.name, dep.specs)